the reference to the mark of the beast in Revelation implies that it will be a mark on the skin, not something implanted under the skin
Rev 13:18 Here is wisdom. Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.
chi xi stigma
khee xee stig'-ma
The 22nd, 14th and an obsolete letter (G4742 as a cross) of the Greek alphabet (intermediate between the 5th and 6th), used as numbers; denoting respectively 600, 60 and 6; 666 as a numeral: - six hundred threescore and six.
stigma
stig'-mah
From a primary word στίζω stizō (to “stick”, that is, prick); a mark incised or punched (for recognition of ownership), that is, (figuratively) scar of service: - mark.
The mark is something under the skin linked to satellite to track people on earth, cut down on crime for if a crime happens they will know who was in the area, and how close they were to the crime scene.
And can find lost people, or whoever they want to find.
With all information about them on the chip.
Which an USAF pilot that been to China said that the government eventually wants all information about you, inside of you.
The beast's agenda is there is no personal God to help mankind, but mankind's technology can help to achieve peace on earth, and things operate smoother and better.
The world will know the beast's agenda, and worship him before they take the mark.
When they take the mark then salvation is no longer available to them and God can end sin on earth.
People that take it now still can have salvation for they are not doing it for the same reason as when it is the mark of the beast.
But they want to make it a popular concept now.
As well as use nanotechnology for the coronavirus crisis that will be able to track people, and monitor them, which Bill Gates wants everyone vaccinated.
This will condition the world to prepare them for the coming mark of the beast, because they are already used to being tracked so the world will not mind being chipped to cut down on crime.